公开(公告)号：US20110080122A1

公开(公告)日：2011-04-07

申请号：US12854956

申请日：2010-08-12

Applicant: Torsten KLEMM ,  Ingo VETTER ,  Uwe JUNGNICKEL

Inventor： Torsten KLEMM ,  Ingo VETTER ,  Uwe JUNGNICKEL

IPC: H02P31/00

CPC classification number: A61C17/221 ,  H02P25/032

Abstract: A small electric appliance is described which comprises an oscillation-capable mechanism (4), an electric motor (1) to drive the oscillation-capable mechanism (4), wherein the electric motor (1) can be operated with a drive current (10) at a predetermined frequency (f), and a device (3) for adjusting the frequency (f) of the drive current of the electric motor (1).Furthermore, a method for adjusting the frequency (f) of a drive current (10) of an electric motor is described comprising the following steps of detecting, at a specified time (tmeas), in relation to the period of the drive current, an electric variable (20) generated by the electric motor (1) determining, at the specified measuring time (tmeas), whether the detected electric variable (20) essentially has a zero-crossing and changing the frequency (f) of the drive current until the detected electric variable (20) essentially has a zero-crossing at the measuring time (tmeas).

Abstract translation: 描述了一种小型电器，其包括振荡机构（4），驱动振荡机构（4）的电动机（1），其中电动机（1）可以用驱动电流（10 ）和用于调节电动机（1）的驱动电流的频率（f）的装置（3）。 此外，描述了一种用于调整电动机的驱动电流（10）的频率（f）的方法，包括以下步骤：在指定时间（tmeas）下相对于驱动电流的周期检测一个 由电动机（1）产生的电动变量（20）在指定的测量时间（tmeas）下确定检测到的电变量（20）是否基本上具有过零点并且改变驱动电流的频率（f）直到 检测的电变量（20）在测量时间（tmeas）上基本上具有过零点。